Ch 10.1 Volcanoes and Plate Tectonics

What are the three factors that determine how magma forms?

• heat

• pressure

• water content

• all of the above are correct

What happens at divergent boundaries?

• plates come together

• plates pull apart

• plates slide past each other

Mt. Kilomanjaro forms at a ______ boundary.

• convergent

• divergent

• intraplate

Where is the Ring of Fire located?

• circles through the Atlantic Ocean

• in both the Atlantic and Pacific Oceans

• circles through the Pacific Ocean

Intraplate volcanism happens ______.

• in the ocean

• on land

• within a tectonic plate

Which of these volcanoes are an example of intraplate volcanoes?

• Yellowstone & Kilauea

• Mt. Kilomanjaro & Yellowstone

• Kilauea & Shasta

T or F: Magma forms in the crust & upper mantle when solid rock melts.

• True

• False

True or False: Most volcanoes and earthquakes form along convergent and divergent boundaries.

• True

• False

Which term describes the "decreased pressure that lowers the melting point of rocks" deep in the Earth?

• decompression melting

• divergence

• pressure melting

Where does magma form?

• in the crust

• in the lithosphere & inner core

• in the crust & upper mantle